CC Madhya 6.112

ācārya — bhaginī-pati, śyālaka — bhaṭṭācārya
nindā-stuti-hāsye śikṣā karā’na ācārya
Synonyms: 
ācārya — Gopīnātha Ācārya; bhaginī-pati — sister’s husband; śyālaka — wife’s brother; bhaṭṭācārya — Sārvabhauma Bhaṭṭācārya; nindā — sometimes blaspheming; stuti — sometimes by praising; hāsye — sometimes by laughing; śikṣā — instruction; karā’na — causes; ācārya — Gopīnātha Ācārya.
Translation: 
Gopīnātha Ācārya was the brother-in-law of Sārvabhauma Bhaṭṭācārya; therefore their relationship was very sweet and intimate. Under the circumstances, Gopīnātha Ācārya taught him by sometimes blaspheming him, sometimes praising him and sometimes laughing at him. This had been going on for some time.