The Law Code of Yājñavalkya 1.3.71

1.3.71

yadi pūrvasmād varāc chreyān vidyābhijanādyatiśayayukto vara āgacchati pūrvasya ca pātakayogo durvṛttatvaṃ vā tadā dattām api haret | etac ca saptamapadāt prāg draṣṭavyam || 1.65 ||

If a bridegroom arrives who is better than the previous bridegroom, endowed with superior learning, lineage, and so forth, and the previous one is attached to sin or of bad conduct, then even though she has been given, he may take her back. And this is to be understood as [permissible only] prior to the seventh step. || 1.65