Arabia before proclamation of Prophethood
ومن خطبة له (عليه السلام)
وفيها يصف العرب قبل البعثة ثم يصف حاله قبل البيعة له
]العرب قبل البعثه[
Verily, Allah sent Muhammad (S) as a warner (against vice) for all the worlds and a trustee of His revelation, while you people of Arabia were following the worst religion and you resided among rough stones and venomous serpents. You drank dirty water and ate filthy food. You shed blood of each other and cared not for relationship. Idols are fixed among you and sins are clinging to you.

انَّ اللهَ سُبحانَه بَعَثَ مُحَمَّداً نَذِيراً لِلْعَالَمِينَ، وَأَمِيناً عَلَى التَّنْزِيلِ، وَأَنْتُمْ مَعْشَرَ العَرَبِ عَلَى شَرِّ دِينٍ، وَفِي شَرِّ دَارٍ، مُنِيخُونَ بَيْنَ حِجارَةٍ خُشْنٍ وَحَيَّاتٍ صُمٍّ تشْرَبُونَ الكَدِرَ، وَتَأْكُلُونَ الجَشِبَ وَتَسْفِكُونَ دِمَاءَكُمْ، وَتَقْطَعُونَ أَرْحَامَكُمْ، الاْصْنَامُ فِيكُمْ مَنْصُوبَةٌ، وَالاْثَامُ بِكُمْ مَعْصُوبَةٌ
Part of the same sermon in describing his condition before allegiance was paid to him (after the death of the Holy Prophet)
I looked and found that there is no supporter for me except family, so I refrained from thrusting them unto death. I kept my eyes closed despite motes in them. I drank despite choking of throat. I exercised patience despite trouble in breathing and despite having to take sour colocynth as food.

منها:
فَنَظَرْتُ فَإِذَا لَيْسَ لِي مُعِينٌ إِلاَّ أَهْلُ بَيْتِي، فَضَنِنْتُ بِهمْ عَنِ المَوْتِ، وَأَغْضَيْتُ عَلَى القَذَى، وَشَرِبْتُ عَلَى الشَّجَا وَصَبَرْتُ عَلَى أَخْذِ الكَظَمِ، وَعَلىْ أَمَرَّ مِنْ طَعْمِ العَلْقَمِ.
Part of the same sermon on the settlement between Mu`awiyah and `Amr ibn al-`As
He did not swear allegiance till he got him to agree that he would pay him its price. The hand of this purchaser (of allegiance) may not be successful and the contract of the seller may face disgrace. Now you should take up arms for war and arrange equipment for it. Its flames have grown high and its brightness has increased. Clothe yourself with patience for it is the best to victory.1

ومنها:
وَلَمْ يُبَايعْ حَتَّى شَرَطَ أَنْ يُؤْتِيَهِ عَلَى البَيْعَةِ ثَمَناً، فَلاَ ظَفِرَتْ يَدُ المبايِعِ، وخَزِيَتْ أَمَانَةُ المُبْتَاعِ فَخُذُوا لِلْحَرْبِ أُهْبَتَهَا وَأعِدُّوا لَهَا عُدَّتَهَا، فَقَدْ شَبَّ لَظَاهَا وَعَلاَ سَنَاهَا وَاسْتَشْعِرُوا الصَّبْرَ فَإِنَّهُ أحْزَمُ لِلنَّصْرِ.