Shaykh Sadruddin Qunawi was the successor and step-son of the Shaykh al-Akbar and the main expositor of his teachings in the Persian speaking world. Amongst the things he mentioned in his final counsel to his disciples was:
1- Adhere to the Quran, Sunnah and Ijma.
2- Limit yourselves to the clear and unambiguous amongst the writings of the Shaykh al-Akbar and those by me.
3- Observe continuous dhikr.
4- Have a constant spiritual occupation (shaghl) and keep the locus of Divine manifestation (heart) free/void of all else.
5- Maintain the best opinion of God.
You should not occupy yourselves with the theoretical sciences but rather with the recitation of Quran, dhikr and the prescribed litanies as well as the clear and unambiguous of the intuitional (dhawqi) sciences.
I enjoin my companions not to take up after me the problematic questions (mujmalat) in the intricacies of the intuitive sciences (al-maa’rif al-dhawqiyya). Rather they should limit themselves to pondering that which is unambiguous (sarih) and clearly determined (mansus), without trying to interpret that which is not plain and unambiguous, whether in my words or in the words of the Shaykh. FOR AFTER ME THESE ARE CLOSED PASSAGES (AYAT MASDUDA). Let none of them accept anything from the intuitions of anyone…………………….unless he comes upon the IMAM, THE MAHDI.
Shaykh Sadruddin Qunawi, Last Testament.