“Once abu ‘Abd Allah (a.s.), was asked about the case of a man who on a journey was with a slave-girl and two slaves. He said to them, ‘You are free for the sake of Allah and bear witness that the child in the womb of the slave-girl is from me. She gave birth to a son. When they came back, the heir refused the will and kept them as slaves. The two slaves were later set free and they testified that their previous master had asked them to bear witness that the child in the womb of the slave-girl was his child. He (the Imam) said, ‘Their testimony is acceptable and the child about whom they testified cannot make them slaves because they proved his genealogical relation.’”