A. Hazrat Musa (AS)
B. Hazrat Idrees (AS)
C. Hazrat Yahya (AS)
D. Hazrat Haroon (AS)
Explanation:
He met Prophet Adam (AS) in the first Heaven, Prophets Isa and Yahya in the second, Yusuf, Dawood and Sulaiman in the third, Musa, Marium and Asiya in the fourth, Ibrahim, Ismail, Yaqub and Lut in the fifth, Noah and Idris in the sixth, and the Prophet Ibrahim (peace be on all the Prophets) once again in the seventh