Raising the index finger in Salaah, Where is this practice established?

In the Name of Allah, the Most Gracious, the Most Merciful.

As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.

In Islam raising the index finger signifies tawḥīd, the Oneness of Allah Taʿālā. It is a confirmed sunnah to raise the index finger in ṣalāh when one recites “Lā ilāha” (There is no God), and lowers it when affirming, “illallah” (except Allah) in the tashhud. It is not a sunnah to raise the index finger every time one proclaims the Oneness of Allah.

And Allah Ta’āla Knows Best

Student - Darul Iftaa

USA

Checked and Approved by,

Mufti Ebrahim Desai.