Shiva Purana
सपवित्रकरश्शुद्ध उपवीती दृढासनः ॥ प्राणायामत्रयं कुर्य्या च्छ्रुत्वातिथ्यादिकं पुनः ॥ ४७॥
He wore a clean sash and a firm seat with his hands clean. After hearing this one should perform three pranayama and again offer hospitality.
english translation
sapavitrakarazzuddha upavItI dRDhAsanaH ॥ prANAyAmatrayaM kuryyA cchrutvAtithyAdikaM punaH ॥ 47॥
hk transliteration by Sanscript