Imamate (Divinely Appointed Leadership) is a very high position, and it is only Allah who can decide who is qualified for it. And if the Prophet Muhammad (S) announced to the people that the Twelve Imams are the leaders, or that the Ahlul Bayt are the people that we must refer to, or in that Imam Ali is his successor, it was only because he was asked...
...The fact that the prophet had left among Muslims two weighty things; the Quran and...
His Supplication in Satisfaction when he Looked upon the Companions of this World
Islam has adopted positively and involved some rulings and obligations to cleanness. ...
In the terminology of the Shari'ah, Naskh means altering one ruling and replacing it ...