Imam Malik(r) learnt leaving the hands unfolded in prayers from grandson of Imam Hasan(r) as known as Abdullah Alkamil(r).
The son of Imam Hasan(r) asked Imam Husain(r) to marry one of his daughters. Imam Husain(r) said: Choose one. So, he felt shyness of modesty. So, Imam Husain(r) said: Marry my daughter Fatimah(r) because she looks like my mother Fatimah(r). From this marriage, Abdullah Alkamil(r) was born.