اسْجُدْ

A word in the Arabic language will either be 1) a verb or 2) a noun or 3) a particle – اسْجُدْ is a verb

Thou submit

To bow down, be lowly, lower the head, worship, prostrate, adore, be humble, submit one’s self, bow down in adoration with the forehead and nose touching the ground, be submissive, make obeisance

A verb will either be 1) past tense or 2) present or future tense or 3) a command or request verb, also called an imperative – اسْجُدْ is a command verb

الْمُخَاطَبُ أَنْتَ  السَّالِمُفِعْلٌ تَامٌّس ج دسَجَدَ يَسْجُدُبَابٌ نَصَرَ
Subject YouSound VerbComplete VerbRootناَلْمَصْدَرُ
فِعْلٌ
Verb of command/Requestفِعْلُ أَمْرٍPresent and future tense verbفِعْلٌ مُضَارِعٌPast tense verbفِعْلٌ مَاضٍ
He prostratesيَسْجُدُHe prostratedسَجَدَ
They two prostrateيَسْجُدَانِThey two prostratedسَجَدَا
They prostrateيَسْجُدُوْنَThey prostratedسَجَدُوْا
She prostratesتَسْجُدُShe prostratedسَجَدَتْ
They two (feminine) prostrateتَسْجُدَانِThey two (feminine) prostratedسَجَدَتَا
They all (feminine) prostrateيَسْجُدْنَThey all (feminine) prostratedسَجَدْنَ
Prostrate اسْجُدْYou prostrateتَسْجُدُYou prostratedسَجَدْتَ
Prostrate (You two)اسْجُدَاYou two prostrateتَسْجُدَانِYou two prostratedسَجَدْتُمَا
Prostrate (You all)اسْجُدُوْاYou all prostrateتَسْجُدُوْنَYou all prostratedسَجَدْتُمْ
Prostrate (feminine)اسْجُدِيYou (feminine) prostrateتَسْجُدِيْنَYou (feminine) prostratedسَجَدْتِ
Prostrate (You two feminine)اسْجُدَاYou two (feminine) prostrateتَسْجُدَانِYou two (feminine) prostratedسَجَدْتُمَا
Prostrate (You all feminine)اسْجُدْنَYou all (feminine) prostrateتَسْجُدْنَYou all (feminine) prostratedسَجَدْتُنَّ
I prostrateأَسْجُدُI prostratedسَجَدْتُ
We prostrateنَسْجُدُWe prostratedسَجَدْنَا
Surah/Below are the 2 verses in the holy Quran containing the imperative verbاسْجُدْ
Verse
and during the night prostrate yourself to Himوَمِنَ الَّيْلِ فَاسْجُدْ لَهُ
76-26and glorify Him a long nightوَسَبِّحْهُ لَيْلًا طَوِيْلًا
96-19Nay! do not obey him. Fall prostrate and draw near to Allah SWTكَلَّا لَا تُطِعْهُ وَاسْجُدْ وَاقْتَرِبْ