What scripture did paul state he was celibate?

In 1 Corinthians 7:7-8, the Apostle Paul expresses his preference for celibacy, stating, "I wish that all men were even as I myself am. But each one has his own gift from God, one in this manner and another in that." He emphasizes that while he values his single status, he acknowledges that celibacy is a gift not given to everyone.