बद्धपद्मासनो योगी प्राणं चन्द्रेण पूरयेत् । धारयित्वा यथाशक्ति भूयः सूर्येण रेचयेत् ॥ २.७ ॥

baddhapadmāsano yogī prāṇaṃ candreṇa pūrayet । dhārayitvā yathāśakti bhūyaḥ sūryeṇa recayet ॥ 2.7 ॥

Sitting in the Padmâsana posture, the yogî should inhale through the left nostril (closing the right one) and hold the breath according to his or her ability. It should be expelled slowly through the sûrya (the right nostril).