Mahabharata 6.65.18

आचार्य सततं त्वं हि हितकामो ममानघवयं हि त्वां समाश्रित्य भीष्मं चैव पितामहम्

ācārya satataṃ tvaṃ hi hitakāmo mamānaghavayaṃ hi tvāṃ samāśritya bhīṣmaṃ caiva pitāmaham

Our plain-language meaning of this verse is waiting for scholar review.