Is it established from 'A'ishah that she said: "If Muhammad had concealed anything of the Qur'an, he would have concealed his story with Ibn Umm Maktum"?

The questioner:
He says: Honorable Shaykh, may Allah grant you success, some preachers in the West mention the story of Ibn Umm Maktum regarding the validity of the Prophet's (peace and blessings be upon him) prophethood?

The Shaykh:
In what respect?

The questioner:
They mention the story of Ibn Umm Maktum, citing it as evidence for the validity of the Prophet's (peace and blessings be upon him) prophethood, and they say that if the Prophet (peace and blessings be upon him) had been lying in his call, he would not have mentioned what was revealed to him, but would have concealed it.

The Shaykh:
Yes, this is narrated from 'A'ishah that she said: If the Prophet (peace and blessings be upon him) had concealed anything, if Muhammad had concealed anything of the Qur'an, he would have concealed the story with Ibn Umm Maktum.