Muhammad ibne Umar Raazi (some call him Fakhruddin) records: “Ali (a.s.) always recited بِسمِ اللہِ الرَّحمٰنِ الرَّحِیمِ loudly and this has been proved with a consecutive chain of narrators (tawaatur) that one who follows Ali (a.s.) in his religion, he is guided and successful. As the Holy Prophet (s.a.w.a.) has mentioned with regards to this:
اَللّہُمَّ اَدرِ الحَقَّ مَعَہٗ حَیثُ دَار

‘O Allah turn the truth with him wherever he turns’

which is a clear and brilliant proof for this fact.”

Tafseere Mafaateeh al-Ghaib (also famous as Tafseer-e-Kabir), vol. 1 p. 205