Explanation:
إِنَّاۤ أَعۡطَیۡنَـٰكَ :
1-Read (ن) with Shaddah ( with Ghonnah ) Two Haraks ( Vowel counts ).
2-Alif Madd length it Four or five Vowel counts Madd Munfasel (separated Madd ) 4 o 5 Harakhs (Vowels counts).
فَصَلِّ : letter (ل ) is Morqeeq ( lite Lam ) , The sound like word (Lamp) in English language , Make sure you pronounce it correctly.
وَٱنۡحَرۡ : Ithaar Halqe because Tanween is followed by (ح) – It means to pronoun Tanween Clearly in Tajweed six Ithaar Halqe Letters ( ء – ه -ع – ح -غ – خ ).
إِنَّ : The (ن) with Shaddih length it two vowels counts .
ٱلۡأَبۡتَرُ : The (ب) has Qalqalah rule , There are five Qalqalah Letters ( ق – ط- ب- -ج – د ) .