'And if' means in what appears to you 'his shirt' refers to Yusuf, blessings and peace be upon him, 'was torn from the back' meaning from the direction of what he turned away from. The term 'torn' is used for the unknown due to the dispute regarding the one who tore it. 'So she lied' and since her lying in intending evil does not determine the truth of her intention towards him, it was said: 'and he is among the truthful' because if it were not for his turning away from her and her approaching him, that would not have occurred. Thus, her master recognized the truth of that without a doubt, because the meaning of 'indeed' here is a condition regarding the confirmation of the meaning that necessitates another, not based on doubt. She presented a sign of her truthfulness because it is something that her master loves. So, it appears to be concern for her, while in reality, it is a confirmation of her lying twice: the first by necessity, and the second by correspondence.