وَنَادَيْنَاهُ مِن جَانِبِ الطُّورِ الْأَيْمَنِ وَقَرَّبْنَاهُ نَجِيًّا (52)
(19:52) We called him from the right side *31 of Tur, and honoured him with secret talk, *32
*31) "The right side of Tur" means the eastern side of the mountain. As Prophet Moses, on his way from Midian to Egypt, was passing from the southern side of Mt. Tur, the eastern side would lie on his right and the western on his left if he faced the mountain, otherwise a mountain by itself cannot have a right or a left side.
*32) See E.N. 206 of Surah An-Nisa (1V).