The Effect Of Adherence To The Sunnah Or Adherence To Innovations Will Become Manifest Upon The Faces Of Its Relevant People
Shaykh ul-Islaam Ibn Taymiyyah [رحمه الله] said:
❝And so this handsomeness and beauty which radiates from the performance of righteous deeds within the heart that then take effect upon the face.
Whilst ugliness and disfigurement which radiates from the performance of corrupt deeds within the heart that then take effect upon the face as has preceded.
Then that is strengthened by the strength of the righteous actions and the corrupted actions. So every time righteousness and fearfulness to Allaah becomes abundant; the handsomeness and beauty are also strengthened.
Whilst every time sin and transgression are strengthened; then ugliness and disfigurement are also strengthened. This is until they wipe away what the appearance contained from beauty and ugliness.
For how many were there that were not of handsome appearance, however through the performance of righteous deeds his beauty and attractiveness intensified until that became manifest upon his appearance.
For this reason, that becomes manifest in clear manifestation with the continuity of abominations [shameful deeds] towards the end of ones life when drawing close to death – for we see the faces of the people of the Sunnah and obedience; every time they grow older their handsomeness and attractiveness increases.
Such that one of them may become in his older age more handsome and beautiful than he was in his youth.
Likewise we find the faces of the people of innovation and sinfulness that every time they grow older their ugliness and disfigurement intensifies in a way that it is not viewed as such by the one who was overcome with that during his youth due to the apparent beauty of its appearance.
This is clear to see in every one that exalts his innovation and his wickedness such as the Raafidhah and the people of wrongful misdeeds and depraved lewdness from the Turks and the likes of them.
For indeed the Raafidhee; every time he gets older; his face becomes uglier – and his disfigurement becomes yet greater. Until his resemblance strongly imitates that of the pigs.¹ For he may even be transformed into a pig or an ape – just as it has been reported in regards to them from multiple sources.❞²
[Al-Istiqaamah, (1/364) | Translated By Abū Haatim M. Farooq]
 The reason for why this happens is explained by Ibn Al-Qayyim [رحمه الله] who said:
❝Read also the piggish transcript upon the appearance of those that resemble them – particularly of those who are enemies to the best of the creation of Allaah after the Messengers. They are the companions of the Messenger [ﷺ], for indeed this transcript [copy] is clear upon the faces of the Raafidhah – it is read by every believer – literate or illiterate.
It manifests and subsides in accordance to the piggish nature of the heart and its filth. For indeed; the pig is the most filthy of the animals and the vilest of them in disposition, and from that which is exclusive to it is that it leaves off the good things – and so does not eat them. The human gets up and leaves his excrement whilst it [the pig] hastens to it. So ponder over the conformity of this attribute with the enemies of the companions in how you will find it applied and closed upon them.
For indeed they betook themselves against the best of the creation of Allaah and the purest of them and so took to being their enemy and distanced themselves from them.❞
[Miftaah Daarus Sa’aadah, (2/254) | Also in Ighaathatul Lahfaan, (2/476) in which the author gives further insight to the bad consequence of following this foul madhab and its manifestation upon the faces of its adherents. | Translated By Abū Haatim M. Farooq]
 Regarding this, Shaykh ul Islaam Ibn Taymiyyah [رحمه الله] stated elsewhere:
❝…Likewise the Raafidhah, in their midst is the curse of Allaah and His punishment for the shirk of how they resemble them [those nations] in some aspects. Indeed; it has been established through multiple sources that amongst them are those who have been transformed; just as they [those nations] were once transformed. For Al-Haafidh Aboo ‘Abdillaah Muhammad bin ‘Abdil-Waahid [Al-Maqdisee] authored a book he entitled: ‘The Prohibition of Reviling the Companions; and What has been Reported in That from Blameworthiness and Punishment’ and he mentions in it a range of well-known stories in that regard.
And I myself am aware of other stories concerning them which he did not cite.❞
[Minhaaj us-Sunnah an-Nabawiyyah, (1/485-486) | Translated By Abū Haatim M. Farooq]