The Prophet, peace be upon him, saw angel Jibreel in his original form only twice, as we can learn from the well attested traditions. The first vision occurred in Ajyad in Makkah, following his first experience with the revelation. The second incident occurred during his mi'raj ( ascension ) into the celestial spheres; it has been referred to in the Qur'an as 'one of the mighty signs of his Lord'. None of these angelic manifestations, as far as we learn from the sources, were seen by anyone else --including Aishah, Allah be pleased with her.
Jibreel, however, used to appear to the Prophet in a human form as happened on a number of occasions; when he did so, he could be seen by others; but since he appeared no different from anyone else, the companions did not recognize him. Thus we read in the famous hadith jibreel: Once a man, well groomed, and, impeccably attired, walked into the majlis (assembly) of the Prophet, peace be upon him. He came and sat in front of the Prophet, and asked him a number of questions on islam, iman and ihsan, etc., but, to the Companions' utter surprise, upon hearing the Prophet's answers, he commented upon them, saying,' you are right! ' This made the companions suspicious; when he went away, the Prophet asked one of his companions to look for him; but the companion reported back that he was no where to be seen; whence the Prophet told them,' that was Jibreel, who came to teach you religion! '
On a number of occasions, Jibreel would assume the form of Dihya al-Kalbi --one of the Prophet's companions, who was a handsome man.
We read in a well attested report from Aishah: Once on seeing the Prophet conversing with Dihyla al-Kalbi for a long while, Aishah asked him,' I saw you conversing so long with Dihya al-Kalbi! ' , then the Prophet corrected her,' no, it was Jibreel, and he conveys his salaam to you'.
We find no mention in the sources of any of the Prophet's other wives ever seeing angel Jibreel. However, we read, again, in Aishah's narrative of the early years of revelation to the Prophet, peace be upon him: Once the Prophet conveyed to Khadijah the greeting of Jibreel, on his behalf, as well as the glad tidings of a mansion in jannah (paradise) awaiting her after death.