It's an astonishing fact that despite having Imam Malik's own handwritten book Muwatta, Malikis do the opposite during salah, that is place their hands by their sides instead of putting right hand on left, as it is narrated by Imam Malik in his Muwatta.
In Muwatta imam malik, chapter Shortening the Prayer - كتاب قصر الصلاة فى السفر ,
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ أَبِي حَازِمِ بْنِ دِينَارٍ، عَنْ سَهْلِ بْنِ سَعْدٍ، أَنَّهُ قَالَ كَانَ النَّاسُ يُؤْمَرُونَ أَنْ يَضَعَ الرَّجُلُ الْيَدَ الْيُمْنَى عَلَى ذِرَاعِهِ الْيُسْرَى فِي الصَّلاَةِ . قَالَ أَبُو حَازِمٍ لاَ أَعْلَمُ إِلاَّ أَنَّهُ يَنْمِي ذَلِكَ
Yahya related to me from Malik from Abu Hazim ibn Dinar that Sahl ibn Sad said,
"People used to be ordered to place their right hands on their left forearms in the prayer."
Abu Hazim added, "I know for sure that Sahl traces that back to the Prophet, may Allah bless him and grant him peace." Muwatta, Book 9, Hadith 381
Same narration Imam Bukhari had taken from Imam Malik in his Book...
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، عَنْ مَالِكٍ، عَنْ أَبِي حَازِمٍ، عَنْ سَهْلِ بْنِ سَعْدٍ، قَالَ كَانَ النَّاسُ يُؤْمَرُونَ أَنْ يَضَعَ الرَّجُلُ الْيَدَ الْيُمْنَى عَلَى ذِرَاعِهِ الْيُسْرَى فِي الصَّلاَةِ. قَالَ أَبُو حَازِمٍ لاَ أَعْلَمُهُ إِلاَّ يَنْمِي ذَلِكَ إِلَى النَّبِيِّ صلى الله عليه وسلم. قَالَ إِسْمَاعِيلُ يُنْمَى ذَلِكَ. وَلَمْ يَقُلْ يَنْمِي.
Narrated Sahl bin Sa`d:
The people were ordered to place the right hand on the left forearm in the prayer. Abu Hazim said, "I knew that the order was from the Prophet (ﷺ). Sahih al-Bukhari 740
Imam Malik says one thing while maliki do the reverse. Despite the fact that they have Imam Malik's own book with them. So now think about Hanafis (Deobandi and Brelvi) and Jafaris (Asna Ashri), who don't possess any personal handwritten book of Imam Abu Hanifa (r.a) and Imam Jafar Sadiq (r.a), majority of india, pakistan and bangladesh. Then how much ignorant they will be from the teachings of two imams as compared to malikis, who despite of having Imam's own book do the reverse. As both Imams have no personal books thats why it became easier for people to attribute lies and deceptions to their name. It's a big evidence against them (hanafis and jafaris).
Jazak Allah Khairan