19:3

إِذْ نَادَىٰ رَبَّهُ نِدَاءً خَفِيًّا

Transliteration:

Ith nada rabbahu nidaan khafiyyan

Word by Word:

When he called (to) his Lord a call - secret.

Translations:

When he called out to his Sustainer in the secrecy of his heart,

Behold! he cried to his Lord in secret,

When he cried unto his Lord a cry in secret,

When he called upon his Lord, crying in secret.

When he called to his Lord a private supplication.