Bhagavad Gita · 1.10

अपर्याप्तं तदस्माकं बलं भीष्माभिरक्षितम्।पर्याप्तं त्विदमेतेषां बलं भीमाभिरक्षितम्॥

aparyāptaṁ tad asmākaṁ balaṁ bhīṣhmābhirakṣhitam paryāptaṁ tv idam eteṣhāṁ balaṁ bhīmābhirakṣhitam

Our strength, protected by Bhishma, is unlimited, while their strength, protected by Bhima, is limited.

— Bhagavad Gita 1.10

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)