Thinking in this way, the King of the Daityas, morose and bereft of bodily luster, remained silent with his face downward. Then Ṣaṇḍa and Amarka, the two sons of Śukrācārya, spoke to him in secret.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
इति तच्चिन्तया किञ्चिन्म्लानश्रियमधोमुखम् । शण्डामर्कावौशनसौ विविक्त इति होचतुः
iti taccintayā kiñcinmlānaśriyamadhomukham | śaṇḍāmarkāvauśanasau vivikta iti hocatuḥ
SB 7.5.48