All of the jussive prepositions are indeclinable except أيُّ which is declinable.

All of the jussive prepositions are indeclinable except أيُّ which is declinable. When is the conditional إن implied? The conditional إن is implied if it comes after a requisition and puts an aorist tense verb into the jussive state. For example: تَعلَّم تَفُز was originally إن تَتَعلُّم تَفز (If you study you will succeed.) Is the conditional verb and its result in the aorist tense or the preterite tense?

The conditional verb and its result can be: • Two aorist tense verbs, for example: إن تَصبِر تَظفَر (If you show patience you will be victorious.) • Two preterite tense verbs, for example: إن صَبرتَ ظَفَرتَ (If you were patient you would have succeeded.) • A combination of tenses, for example: إن تَصبر ظفرت or إن صبرت تظفر . If the first verb is in the preterite tense and the second in the aorist tense, the second verb can be put into the jussive or nominative cases.

When is it necessary to add a fā' to the result? In the following six cases it is obligatory to add a fā' to the result: • If the result is in the preterite tense preceeded by قد , for example: إن آمَنتَ فقد خلصتَ (If you believed you would have become pure.) • If the result is made negative by ما or لن , for example: إن جاءني ضیفٌ فما أرُدُهُ (If a guest comes to me I will not reject him.) • If the result is a requisition verb, for example: أن سَقَطَ عدُوُّکَ فلا تَسمَت بِهِ (If your enemy falls do not become happy about it.) • If the result is an aplastic verb, for example: إن تَرَني أقل مالاً فعسیَ رَبِّي أن یُغنیَني (If you see me poor have hope that my Lord will make me rich.) • If the result is preceded by a sīn or سوف , for example: إن زُرتَني فسأزورک (If you visited me I will soon visit you.) • If the result is a nominal sentence, for example: مَهما أردت فأنّي مستعدٌّ لقضائه (Whenever you desire I will surely help you settle it.) When is it permissible to add a fā' to the result?

In the following two cases it is permissable to add a fā' to the result: • If the result is in the aorist tense and made negative by a لا , for example: إن تَدرُس فَلا تَخسَر (If you study you will not fail.) • If the result is a positive aorist tense verb, for example: مَن یَطلُب فَیَجِد (Whoever searches will find.) What state is the result in if a fā' is added to it?

If a fā' is added to the result, it is forbidden to put it in the jussive case, instead one must put it in the nominative case as a subjective compliment for an implied inchoative.