It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever walks to an obligatory prayer, it is equal in rank to a Hajj, and whoever walks to a voluntary prayer, it is equal in rank to an Umrah"
"and one prayer following another prayer, with no idle talk between them, is a record in Illiyyin."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7733