For Truth when united with qualities becomes always possessed of five marks. Brahman is Truth. Penance is truth. Prajapati is truth.
सत्यं हि गुणसंयुक्तं नियतं पञ्चलक्षणम्॥ ब्रह्म सत्यं तपः सत्यं सत्यं चैव प्रजापतिः।