{Invoke your Lord with humility and in secret. He likes not the aggressors.} [Surah al-Araf (7): 55]
Umar bin al-Khattaab رضي الله عنه said: “(Duaa should be done) with devotion or else Allaah تعالى has forbidden to accept the Duaa and the Tasbeeh” [Jaami al-`Uloom wal-Hikam (1/276)]