Is the letter hā' one of the letters of oath, as in the saying of Abū Bakr: "Lā hā Allāh"?

The questioner : May Allah reward you. The questioner asks: O esteemed Shaykh, is it correct that we count the hā' among the tools of oath, based on the hadith of Abū Bakr al-Ṣiddīq...

The Shaykh : That we

The questioner : That we count the hā', the letter hā'

The Shaykh : Yes, that is right.

The questioner : among the tools of oath, based on the hadith of Abū Bakr al-Ṣiddīq (may Allah be pleased with him): .

The Shaykh : Yes, the mention of the hā' of oath, or the mention of the hā' among the letters of oath, is very rare, but it exists in the language; it exists in the Arabic language. The well-known letters of oath are how many? The wāw, the bā', and the tā'. Yes.