The Prophet (SAWA), when he was asked about humbleness in prayer, said, ‘It is to abase oneself in the prayer, and for the servant to come to his Lord wholeheartedly.
رسولُ اللهِ (صَلَّيَ اللهُ عَلَيهِ وَ آلِهِ) ـ لَمّا سُئلَ عنِ الخُشوعِ ـ: التَّواضُعُ في الصَّلاةِ، وأن يُقبِلَ العَبدُ بقَلبِهِ كُلِّهِ على رَبِّهِ.