In this part of the lesson we will learn a new grammatical term, Insha'Allah. We will learn about the form of a noun which indicates the time when an action has been occurred. These type of nouns are called "Adverbial Time Objects - ظَرْفُ زَمَانٍ" or "The object of time - الْمَفْعُوْلُ فِيْهِ". In this part of lesson we will learn about the vowel ending of these words as well as the words following them, Insha'Allah. There are different nouns used as Adverbial Time Objects and we will learn two of them in this part of the lesson which are:

 These nouns are a type of Object, therefore they always take the accusative case (with a fatha). However they work as Mudaf (possessed) therefore the nouns following them will take the genitive case e.g.,

• دَخَلْتُ الْبَيْتَ بَعْدَ الْصَّلاَةِ it means "I entered the house after the prayer", or

• ذَهَبْتُ الْمَدْرَسَةِ قَبْلَ أَحْمَدَ means "I went to the school before Ahmad".
   

Lets take some more examples to understand this rule