One verse

Srimad Bhagavatam 8.3.1

8.3.1

श्रीबादरायणिरुवाच एवं व्यवसितो बुद्ध्या समाधाय मनो हृदि । जजाप परमं जाप्यं प्राग्जन्मन्यनुशिक्षितम् ॥ १ ॥

sri-badarayanir uvaca evam vyavasito buddhya samadhaya mano hrdi jajapa paramam japyam prag-janmany anusiksitam

sri-badarayanih uvaca
Sri Sukadeva Gosvami said
evam
thus
vyavasitah
fixed
buddhya
by intelligence
samadhaya
for concentration
manah
the mind
hrdi
in consciousness or in the heart
jajapa
he chanted
paramam
a supreme
japyam
mantra he had learned from great devotees
prak-janmani
in his previous birth
anusiksitam
practiced.

Sri Sukadeva Gosvami continued: Thereafter, the King of the elephants, Gajendra, fixed his mind in his heart with perfect intelligence and chanted a mantra which he had learned in his previous birth as Indradyumna and which he remembered by the grace of Krsna.