Hadith 532 - Times of the Prayers - Sahih Al-Bukhari - صحيح البخاري - Collection of Actions, Sayings and Teachings of Prophet Muhammad (صلى الله عليه و سلم) - Kutub as-Sittah

9. Times of the Prayers - كتاب مواقيت الصلاة

8) Chapter: A person in Salat (prayer) is speaking in private to his Lord (Allah)

Narrated Anas:

The Prophet (ﷺ) said, "Do the prostration properly and do not put your forearms flat with elbows touching the ground like a dog. And if you want to spit, do not spit in front, nor to the right for the person in prayer is speaking in private to his Lord."

Reference: 532
English reference: Vol. 1, Book 10, Hadith 509
In-book reference: Book 9, Hadith 11
Grade: Sahih
Read this hadith from Darussalam Collection

8) باب الْمُصَلِّي يُنَاجِي رَبَّهُ عَزَّ وَجَلَّ

حَدَّثَنَا حَفْصُ بْنُ عُمَرَ، قَالَ حَدَّثَنَا يَزِيدُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا قَتَادَةُ، عَنْ أَنَسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏‏‏.‏ "‏ اعْتَدِلُوا فِي السُّجُودِ، وَلاَ يَبْسُطْ ذِرَاعَيْهِ كَالْكَلْبِ، وَإِذَا بَزَقَ فَلاَ يَبْزُقَنَّ بَيْنَ يَدَيْهِ وَلاَ عَنْ يَمِينِهِ، فَإِنَّهُ يُنَاجِي رَبَّهُ ‏"