The word(s) "cause" appears 378 time(s) in 342 verse(s) in Quran in Mohsin Khan translation.

(21) There has already been a sign for you (O Jews) in the two armies that met (in combat i.e. the battle of Badr). One was fighting in the cause of Allah, and as for the other, (they) were disbelievers. They (the believers) saw them (the disbelievers) with their own eyes twice their number (although they were thrice their number). And Allah supports with His Victory whom He wills. Verily, in this is a lesson for those who understand. (See Verse 8:44). (Tafsir At-Tabari)

(22) This is because they say: "The Fire shall not touch us but for a number of days." And that which they used to invent regarding their religion has deceived them.

(23) Then when 'Îsa (Jesus) came to know of their disbelief, he said: "Who will be my helpers in Allah's cause?" Al-Hawariyyun (the disciples) said: "We are the helpers of Allah; we believe in Allah, and bear witness that we are Muslims (i.e. we submit to Allah)."

(24) Among the people of the Scripture (Jews and Christians) is he who, if entrusted with a Qintar (a great amount of wealth, etc.), will readily pay it back; and among them there is he who, if entrusted with a single silver coin, will not repay it unless you constantly stand demanding, because they say: "There is no blame on us to betray and take the properties of the illiterates (Arabs)." But they tell a lie against Allah while they know it.

(25) It is not (possible) for any human being to whom Allah has given the Book and Al-Hukm (the knowledge and understanding of the laws of religion) and Prophethood to say to the people: "Be my worshippers rather than Allah's." On the contrary (he would say): "Be you Rabbaniyyun (learned men of religion who practise what they know and also preach others), because you are teaching the Book, and you are studying it."

(26) Verily, those who disbelieved after their Belief and then went on increasing in their disbelief (i.e. disbelief in the Qur'an and in Prophet Muhammad صلى الله عليه وسلم) - never will their repentance be accepted [because they repent only by their tongues and not from their hearts]. And they are those who are astray.

(27) By no means shall you attain Al-Birr (piety, righteousness - here it means Allah's Reward, i.e. Paradise), unless you spend (in Allah's cause) of that which you love; and whatever of good you spend, Allah knows it well.

(28) Indignity is put over them wherever they may be, except when under a covenant (of protection) from Allah, and from men; they have drawn on themselves the Wrath of Allah, and destruction is put over them. This is because they disbelieved in the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of Allah and killed the Prophets without right. This is because they disobeyed (Allah) and used to transgress beyond bounds (in Allah's disobedience, crimes and sins).

(29) Those who spend (in Allah's cause) in prosperity and in adversity , who repress anger , and who pardon men; verily, Allah loves Al-Muhsinun (the good-doers).

(30) Do you think that you will enter Paradise before Allah tests those of you who fought (in His cause) and (also) tests those who are As-Sabirun (the patient)?