The Holy Prophet (PBUH) started to teach his companions in?

The Holy Prophet (PBUH) started to teach his companions in?
(a) Khana Ka’aba
(b) Shoaib-e-Talib
(c) In his house
(d) Dar-e-Arqam

✅ Correct Option: (d) Dar-e-Arqam
Explanation: The Prophet (PBUH) first began formal teaching of companions at Dar-e-Arqam in Makkah.