قَالَ رَسُولُ اللٌّه: طُوبـى لِمَنْ أَدْرَكَ قَائِمَ أَهْلِ بَـيْـتِيْ وَ هُوَ مُقْتَدٍ بِهِ قَبْلَ قِـيَامِهِ. يَتَوَلَّـى وَلِـيَّهُ يَتَبَرَّأُ مِنْ عَدُوِّهِ وَ يَتَوَلَّى الأَئِمَّةَ الْهَادِيَةَ مِنْ قَبْلِهِ. أُولٌئِكَ رُفَقَائِيْ وَ ذُو وُدِّيْ وَ مَوَدَّتِيْ وَ أَكْرَمُ أُمَّتِيْ عَلَـيَّ.
The Messenger of Allah (peace be upon him and his family) has said: “Congratulations to the person who meets the Qa’im [one who will rise] from my Ahlul Bayt and has firm belief in him before his advent. He will have love for his friends, and will distance himself from his enemies and will have love for the leaders of guidance (the Imams) who came before him. Indeed these are my true friends, those whom I have love and affection for and (they) are the noblest of people from my nation.”
Biharul Anwar, Volume 52, Page 129; al-Ghaybah of Shaykh Tusi