Abu Qatada reported,
The Messenger of Allah ﷺ said that Allah 
declared, "I have made five prayers obligatory upon your nation, and I have made a covenant with Myself that whoever guards them at their proper times, I will admit him into Paradise. But whoever does not guard them has no covenant with Me."
Ibn Majah 1403
Daifحدثنا يحيى بن عثمان بن سعيد بن كثير بن دينار الحمصي حدثنا بقية بن الوليد حدثنا ضبارة بن عبد الله بن أبي السليك أخبرني دويد بن نافع عن الزهري قال قال سعيد بن المسيب إن
أبا قتادة بن ربعي أخبره
أن رسول الله ﷺ قال قال الله عز وجل افترضت على أمتك خمس صلوات وعهدت عندي عهدا أنه من حافظ عليهن لوقتهن أدخلته الجنة ومن لم يحافظ عليهن فلا عهد له عندي
Sourcing. Its isnad is daif. Abu Dawud narrated it in the Book of Prayer, chapter on Maintaining the Prayers, no. 430, from the hadith of Baqiyyah with this wording. Dabarah is an obscure narrator, and I did not find an explicit statement that Zuhri heard this directly. Busiri indicated its weakness. The hadith has two daif corroborating witnesses, one with Ahmad (4/244, no. 18312) and one with Darimi (no. 1229).