PRAYER IS MORE VALUABLE IN THE MOSQUE H 1081 "The prayer of a person offered with the congregation is twenty five times more (valuable) than his prayer at home or in the market. This is because when he performs his ablution diligently and then proceeds to the mosque for the sole purpose of the prayer, every step that he takes raises his rank and wipes out a sin. While he is engaged in prayer, angels continue to supplicate for mercy upon him, and this continues so long as he remains in his place of prayer with ablution. The angels supplicate saying, 'O Allah, send down blessings on him; O Allah, have mercy on him.' He is considered to be in a state of prayer while he waits for the congregational prayer.'" R 1081 Bukhari and Muslim with a chain up to Abu Hurairah who related the Messenger of Allah, praise and peace be upon him, said this.
1065 - وعن أبي هريرة رضي الله عنه ، قَالَ : قال رَسُولُ اللهِ صلى الله عليه وآله وسلم : "صَلاةُ الرَّجُلِ في جَمَاعةٍ تُضَعَّفُ عَلَى صَلاتِهِ فِي بَيْتهِ وفي سُوقِهِ خَمْساً وَعِشْرِينَ ضِعْفَاً ، وَذلِكَ أَنَّهُ إذَا تَوَضَّأ فَأحْسَنَ الوُضُوءَ ، ثُمَّ خَرَجَ إلى المَسْجِدِ ، لا يُخرِجُهُ إلاَّ الصَّلاةُ ، لَمْ يَخْطُ خَطْوَةً إلاَّ رُفِعَتْ لَهُ بِهَا دَرَجَةٌ ، وَحُطَّتْ عَنهُ بِهَا خَطِيئَةٌ ، فَإذَا صَلَّى لَمْ تَزَلِ المَلائِكَةُ تُصَلِّي عَلَيْهِ مَا دَامَ في مُصَلاَّهُ ، مَا لَمْ يُحْدِث ، تقولُ : اللَّهُمَّ صَلِّ عَلَيهِ ، اللَّهُمَّ ارْحَمْهُ ، وَلاَ يَزَالُ في صَلاةٍ مَا انْتَظَرَ الصَّلاَةَ" متفقٌ عَلَيهِ ، وهذا لفظ البخاري .