كتاب الصلاة
2  
The Book of Prayer
Bulugh al-Maram 173
at-Tirmidhi has reported something similar, narrated by Ibn 'Umar, without mentioning the midtime. [It is Da'if (weak) too].
وَلِلتِّرْمِذِيِّ مِنْ حَدِيثِ اِبْنِ عُمَرَ نَحْوُهُ, دُونَ اَلْأَوْسَطِ, وَهُوَ ضَعِيفٌ أَيْضًا 1
Reference : Bulugh al-Maram 173
In-book reference : Book 2, Hadith 173
English translation : Book 2, Hadith 173
Hadith Text
Reference