Narrated Aisha, Ummul Mu'minin:
Al-Miqdam ibn Shurayh, quoting his father, said: I asked Aisha about living in the desert. She said: The Messenger of Allah (ﷺ) used to go to the desert to these rivulets. Once he intended to go to the desert and he sent to me a she-camel from the camel of sadaqah which had not been used for riding so far. He said to me: Aisha! show gentleness, for if gentleness is found in anything, it beautifies it and when it is taken out from anything it damages it.
Ibn al-Sabbah said in his version: Muharramah means a mount which has not been used for riding.