Śrīmad-Bhāgavatam · Text 1.14.37
Who is speaking and story frame
यत्पादशुश्रूषणमुख्यकर्मणा
सत्यादयो द्व्यष्टसहस्रयोषित: ।
निर्जित्य सङ्ख्ये त्रिदशांस्तदाशिषो
हरन्ति वज्रायुधवल्लभोचिता: ॥ ३७ ॥
yat-pāda-śuśrūṣaṇa-mukhya-karmaṇā
satyādayo dvy-aṣṭa-sahasra-yoṣitaḥ
nirjitya saṅkhye tri-daśāṁs tad-āśiṣo
haranti vajrāyudha-vallabhocitāḥ
Simply by administering comforts at the lotus feet of the Lord, which is the most important of all services, the queens at Dvārakā, headed by Satyabhāmā, induced the Lord to conquer the demigods. Thus the queens enjoy things which are prerogatives of the wives of the controller of thunderbolts.
Read Śrīla Prabhupāda's purport on Vedabase.io