Fazkurooneee Azkurkum Washkuroo Lee Wa Laa Takfuroon.
So remember Me and I shall remember you; give thanks to Me and do not be ungrateful to Me for My favors.
Surah Baqarah 2:152 Quran

Hazrath Ibn Abbas ^Rz. narrated: The Messenger of Allah, ^PBUH, said that-‘ Teach and make it easy. Teach and make it easy.’ three times. He ^PBUH went on, ‘When you are angry, be silent’ twice.-(Sahih Al Bukhari)

Hazrath Imam Mahdi ^PBUH sought to prove his being the Mahdi by Allah, Quran and the word and deed of Prophet Muhammad ^PBUH and said that whoever rejects the mahdi-ship of “this person” (zath) (pointing to himself),i.e., Imam Mahdi Alaihissalam, he rejects Allah, Quran and Prophet Muhammad ^PBUH .This narration was recorded at Khanbel(a village in Gujarat.

Hazrath Ali Ul Murtuza ^Rz. said that -“He that lends a listening ear to reproach is one of those [who] deserves reproach.”