Caitanya-caritāmṛta 17.66
ācārya-gosāñire prabhu kare guru-bhakti tāhāte ācārya baḍa haya duḥkha-mati
[aachaarya-gosaanire prabhu kare guru-bhakti taahaate aachaarya bada haya duhkha-mati]
Blended reading (Sanskrit + English inline)
ācārya-gosāñire prabhu kare guru-bhakti tāhāte ācārya baḍa haya duḥkha-mati
Lord Caitanya respected Advaita Ācārya as His spiritual master, but Advaita Ācārya Prabhu was greatly aggrieved by such behavior.
My note
Source: vedabase.io