Yahya related to me from Malik from Hisham ibn Urwa that his father said, "The following ayat was sent down about dua - 'And do not be loud in your prayer and do not be silent in it, but seek a way between these.' " (Sura 17 ayat 110)

Yahya said that Malik was asked about making dua in obligatory prayers and he said, "There is no harm in making dua in them."
Muwatta Malik Book 15, Hadith 41
← Previous Hadith Yahya related to me from Malik from Yahya ibn Said that Said ibn al-Musayyab used to say, "A man is raised by the dua of his son after his death." He spoke with his hands turned upwards, and then lifted them up.

Muwatta Malik Book 15, Hadith 40 Next Hadith → Yahya related to me from Malik that he had heard that the Messenger of Allah, may Allah bless him and grant him peace, used to make dua saying, "O Allah, I askYou for good actions and for leaving what is disapproved of and for love of the poor. And if You wish to try people, then bring me to You without being tried."

Allahumma inniy asa'luka fala'l-khayrati, wa tarqa'l-munqarati, wa hubba'l-masakin, wa idha aradta fi'n-nasi fitnatan fa'qbithni ilayka ghayra maftun.

Muwatta Malik Book 15, Hadith 42